Computer simulation method with user-defined transportation and layout

ABSTRACT

A multi-user process receives input from multiple remote clients to manipulate avatars through a virtual environment modeled in a host memory. The environment includes portal objects operable to transport avatars, which are modeled objects operated in response to client input, between defined areas of the virtual environment. The portals are customizable in response to client input to transport avatars to destinations preferred by users. Adjacent defined areas are not confined in extent by shared boundaries. The host provides model data for display of the modeled environment to participating clients.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a continuation of U.S. application Ser. No.11/867,345, filed Oct. 4, 2007, now U.S. Pat. No. 9,329,743, whichclaims priority pursuant to 35 U.S.C. §119(e) to U.S. provisionalapplication Ser. No. 60/828,216, filed Oct. 4, 2006, which applicationsare incorporated by reference herein.

BACKGROUND

1. Field

The present disclosure relates to a computer simulated “virtual reality”universe in which human beings are able to interact with automatedentities and other human beings in a modeled environment served tomultiple clients via a networked system, and more particularly tosystems and methods for enabling user-defined transportation and layoutin a three dimensional virtual reality universe.

2. Description of Related Art

Various simulation games are known in which a 3-D physical world (actualor fantasy) is simulated. Games of this type are sometimes referred toas “virtual reality” or “virtual reality universe” (VRU) games. In knownVRU games, an actual or fantasy universe is simulated within a computermemory. Multiple players may participate in a in the game through acomputer network, such as a local area network or a wide area network.Each player selects an “avatar,” often a three-dimensional figure of aman, woman, or other being, to represent them in the VRU environment.Players send inputs to a VRU engine to move their avatars around the VRUenvironment, and are able to cause interaction between their avatars andobjects in the VRU. For example, a player's avatar may interact with anautomated entity or person, simulated static objects, or avatarsoperated by other participants.

The VRU may take the form of at least one area or environment which is avirtual-reality three-dimensional map existing in a computer memory,consisting of elements that may include but are not limited torepresentations of rooms, outdoor areas, exotic environments, objects,people, animals, robots, avatars, robot avatars, time elements,additional spatial elements, and activities. Users establish a presencein the VRU by creating or using an avatar, which is a three-dimensionalrepresentative of the user in the VRU, and which can be navigated by theuser around various environments in the VRU. A view or views of the VRUare displayed to the user using a computer display and user interfacesoftware as known in the art. Each user provides input to a computercontrolling the VRU using an input device connected to a local node orclient, which is in turn connected to the networked computer system. TheVRU is shared by multiple participants, using elements from the commonmemory.

A VRU may be used for game play, on-line commerce, social introductionsand networking, advertising, entertainment, or almost any other functionthat can be performed over a computer network. A VRU is defined not bythe functions it performs, but by the appearance and operation of theenvironment in which multiple participants interact. This environmentshould simulate a three-dimensional spatial environment with interactiveobjects and other participants. A VRU may be described as aninteractive, real-time three-dimensional animation with multipleparticipants.

The computer system is used to control the action of the avatars inresponse to user input. For example, avatars may be limited to simplyobserving the environment or area. But usually, avatars can interactwith some or all of: other avatars, objects, the environment (e.g.,walls, floors, roads, lakes, etc.), and automated or robotic avatarswithin at least one environment. Interactions by one avatar with anyother avatar, object, the environment or automated or robotic avatarsmay, in some cases, but need not, result in outcomes that may effect orotherwise be observed or experienced by other avatars, objects, theenvironment, and automated or robotic avatars within the environment ofthe VRU.

Activities such as navigating web sites by visiting a web site andsubsequently clicking a hyperlink to visit a different web site shouldbe distinguished from navigation within a VRU. The navigation within aVRU is currently based on the methods used in the real world—namely,walking or running or otherwise maneuvering one's avatar physically fromone area or environment to another area or environment, or in thealternative, entering some sort of portal or gateway or othertransportation point (or by clicking on a link) to be teleported fromone environment or area to another environment or area. Thetransportation portal may look like a door, a passageway, a wormhole orany of innumerable appearances, but with the effect that the maneuveringof one's avatar into the portal, or otherwise actuating the portal as byclicking or through some other mechanism, will transport one's avatar toa different environment or area.

One drawback of prior-art VRU's is that the environment or area may notbe laid out by the designer such that moving one's avatar from oneenvironment or area to another is most efficient for the user. Forexample, there may be several environments or areas that separate theuser's avatar from his intended destination, which environments or areasthe user does not wish or need to navigate past. Such physicalnavigation may be very time-consuming. Another drawback of the VRU isthat teleportation from one environment or area to another which theuser desires to visit may not be available, or, if available, may beinconveniently located for the user's avatar, such that, once again, theuser is burdened with a time-consuming navigation to obtain the desiredteleportation option. Therefore, notwithstanding the advantages ofexisting VRU environments, it is desirable to provide new VRUenvironments that overcome these and other limitations of the prior art.

SUMMARY

A system, method and apparatus are disclosed for allowing users of a VRUto create new and/or define or redefine existing transportationmechanisms to better suit their personal needs. The technology disclosedherein similarly allows operators of areas and environments within a VRUto customize, define or redefine the destination of such new or existingtransportation mechanisms to better suit their needs, and the needs ofthe users. Accordingly, users are provided with the ability toexperience networked activities in a manner that is different from thecurrent internet or the World Wide Web and from prior-art VRU's.

The present technology uses the advantage that a VRU may be designed sothat it is not confined to the same three dimensional space limitationsas is the physical world. Therefore, it is possible for users andoperators of a VRU to allow doorways and other portals to send users todestinations that can be defined in some manner and are not permanentlyset to a single destination. Each user may be provided with the optionto customize operation of a doorway or other portal. User-definedspecifications for operation of a portal are stored in a database inassociation with a user ID. For example, VRU coordinates fordestinations on either side of a portal may be stored in the database.When the user's avatar approaches the portal, the VRU engine queries thedatabase with the user ID to obtain the coordinates of the destinationlocation. When the avatar enters the portal, the engine serves the VRUenvironment existing at the defined location.

A customized element, or a common element, may be defined so as tooccupy more space than is physically possible. For example, a buildingmay have a 1000 square feet footprint when viewed from the outside, anda 10,000 square feet footprint (or any other size footprint) when viewedfrom the inside. For further example, a hallway may be provided withdoors, each leading to a space or room of any desired size.

The present technology should be distinguished from applications whichpermit a game player or game developer to define a virtual environmentfor a game. Such applications do not permit participants in a common VRUor game to experience common areas or experiences while also definingthe environment in a way that is customized for each user. The blendingof common and custom elements in a multi-user VRU is a novel concept andrequires the solution of problems that have not heretofore beenattempted for successful implementation.

A more complete understanding of the simulation method with user-definedtransportation will be afforded to those skilled in the art, as well asa realization of additional advantages and objects thereof, by aconsideration of the following detailed description of the preferredembodiment. Reference will be made to the appended sheets of drawingswhich will first be described briefly.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram showing a system for simulation methodwith user-defined transportation.

FIG. 2 is a schematic diagram showing a second system for simulationmethod with user-defined transportation.

FIGS. 3A-3B are schematic plan views showing exemplary customization ofportals in a common environment.

FIGS. 4A-4B are schematic plan views showing exemplary operation of anexpanded environment space within a VRU.

FIGS. 5A-5C are schematic plan views showing exemplary operation of acustomized doorway for different participants.

FIG. 6 shows exemplary steps of a method 600 for operating a VRU portal.

FIG. 7 is an exemplary view of a VRU with avatars.

DETAILED DESCRIPTION

The disclosed solution to enhance VRU's is a system, apparatus andmethod for allowing users dynamically to create user-defined doorwaysand other portals. In the detailed description that follows, likeelement numerals are used to denote like elements appearing in one ormore of the figures.

Referring to FIG. 1, a system 100 for providing a VRU to multiple usersmay comprise a plurality of client sites, nodes or terminals, forexample a personal computer 104, portable computers 106, 110, a compactplayer, cell phone or digital assistant 108, and/or router 112communicating via a WAN 102 to one or more servers 114. Servers 114store and serve game data and software to the client sites. Software orfirmware may also be located at each client site, configured to workcooperatively with software or firmware operating on servers 114.Generally, any number of users may be communicating with servers 114 forparticipation in the VRU at any given time.

Referring to FIG. 2, a system 200 for providing a VRU may be consideredto be comprised of server-side components (to the left of dashed line222) and client-side components (to the right of dashed line 222).Server-side components may comprise a portal 220 for managingconnections to multiple simultaneous players. Portal 220 interacts witha VRU engine 218, passing user input from multiple clients to a gameengine, and passing game data from the VRU engine to respectiveindividual players. VRU engine 218 is operatively associated with twomemory spaces, a common memory space 204 holding common elements of theVRU, and a personalized space 210. As known in the art, objects in a VRUare modeled as three-dimensional objects, or two-dimensional objects,having a defined location, orientation, surface, surface texture, andother properties for graphic rendering or game behavior. Common memoryspace 204 may be considered as comprised of a core area 206 for holdingcore common elements, and a non-core area 208 for holding non-corecommon elements 208. Customized space 210 may be comprised of variousdifferent customized areas 212, 214, 216, each assigned to a differentuser.

A portal or other transportation may be made up of a combination ofpersonalizable and common elements. For example, the appearance of adoor may be a common element that is the same, regardless of thedestination to which it leads. The transport characteristics of thedoor, in comparison, may be personal to a user or a group of users. Thedoor may lead to a first environment “A” by default, but may becustomized to lead to any other environment, e.g., environment “B” for aparticular user or users. Similarly, a road or path may be made to havea different destination, depending on who is traversing it. Therefore,in determining the result of a player passing through a portal or othertransportation element, VRU engine 218 will draw from both commonelement space 206 and customized space 210.

A separate administration module 202 may operate at the server level tocreate, update, modify or otherwise control the content of the VRU asdefined in the memory areas 204 and 210. Generally, changes in thepersonal space area 210 are driven by individual users, either throughthe VRU administrator 202 or another module. Control of common areas,i.e., the game environment and the objects in it, may be via theadministrator module 202.

At the client level, a player interface module 224 may be installed toreceive player inputs from one or more user input devices, such as akeyboard, mouse or other pointer, or microphone, and provide data to theVRU engine 218 via portal 222 in response to the input. The playerinterface module may also receive game data from portal 220 and processthe data for display on display 226 and/or for audio output on speaker230. Various systems and methods for providing a three-dimensional,multiplayer interactive animation to multiple players are known in theart, or may be adapted by one of ordinary skill for use with thetechnology disclosed herein. The technology is not limited to aparticular hardware or software architecture for carrying out the stepsdescribed herein.

As disclosed herein, a user may be provided with the ability to defineor redefine the destination of existing transportation mechanisms withinan environment or area. FIGS. 3A and 3B show exemplary 3-D environments300, 300′ in plan view. Both environments share common elements, such asa road 302 and buildings 304, 306, 308. Each of these buildings may havean external appearance to clients represented by avatars on road 302,and one or more doors leading to the road. Receipt of user inputs formoving an avatar through the doorway may result in placing the avatar ina new environment that may be configured to represent the interior ofeach respective building. Environment 300 may include certain doors thatlead to other environments that a participant does not desire to visit.For example, the interior of buildings 312 and 310 may not be ofinterest to the user.

Therefore, the user should be provided with a link or command, that whenprovided to the game engine, permits the user to change the transportcharacteristics of a portal or other transportation element. Forexample, double-clicking on a door or building may cause a customizationmenu 320 to appear. The customization menu should allow the user toselect a custom destination from one or more alternative destinations.In the illustrated example, the customization menu displays a map of theimmediate environment with alternative destinations 322 shown in aseparate screen area. A user may “click and drag” a desired building inor out of the displayed environment to change the building located onroad 302. In effect, this action changes both the external appearance ofthe doorway and the place to where it leads. In the alternative, or inaddition, the destination of the portal may be changed without changingits external appearance in the common environments 300, 300′.

Using the system herein described, the user may change the destinationof those doors such that when the user who has made the changes directsher avatar to move through those doors, that user arrives in adestination that the user has selected rather than the originaldestination set by the environment's designer. The instant technologycontemplates that all other users who have not similarly changed thedestination of that doorway may still arrive at the original destinationas set by the environment's designer. The new destination may be acommon environment, or a private environment accessible only to aparticular user and that user's invitees (or other club members, etc.).In addition, the system may be configured so that changes as made by oneor more users authorized by the user also affect the user's owndestination settings.

Optionally, some doorways in the environment may be locked so that theycannot be changed, while other portals may be customized. For example,buildings 304 and 306 may represent buildings or environments belongingto commercial sponsors, which are locked to protect the value of thesecommercial properties. In addition, a user may be permitted to changethe destination on both sides of the portal—to change not only where itleads, but where it leads back to. Some limitation on the ability tochange portals to lead to private environments may be desirable, toprevent participants from getting lost or stuck in private environmentswith no convenient passage to the common environments of the system.

Another feature of the instant technology is that the user may be ableto customize the look of the transportation mechanism. Thus, the usermay wish to change the destination of a portal in a primary environment,and he may also wish to change the look of the portal as well as thefaçade surrounding the area of the portal such that it is more suitablefor the new destination, as illustrated by FIGS. 3A and 3B. The instanttechnology permits the user to make those changes by any suitableprocedure, such as creating the new graphics, or copying and pastingexisting graphics, or instructing the environment to display any of theavailable graphics, or any other manner for effecting these changes asis well known in the art, such that the user who has made those changesexperiences those changes via interaction of the user's avatar with theenvironment. For example, a user presented with an editing screen 320may remove building 310 and replace building 300 with building 326 tocreate the modified environment 300′.

All other users who have not similarly requested or effected thosechanges may still perceive the environment as set by the environment'sdesigner, e.g., default environment 300 in the illustrated example.However, users may have the ability to establish a mechanism wherebychanges as made by one or more users authorized by the user may effectthe user's own environmental and area perception settings. Thus, forexample, a wife may make changes to the various portal and façadegraphics, and the husband, if he has established that he would prefer tohave all changes effected by his wife also affect him, will also realizethose changes. User's may be identified as known in the art; forexample, requiring user's to log in with a user name and password,and/or writing user identifying information to client machines thataccess the multi-user environment.

In some embodiments, a user may be provided with an ability to create afully customized environment by selecting other environments or areasthat the user wishes, copying and pasting them into a custom area orenvironment. By so obtaining existing facades, portals, environments andareas, and assembling them, the user will be able to establish anenvironment that is customized to the user's specific interests andneeds. Such customized environments may be used only by the user, or, inthe alternative, by other users who are permitted, invited or otherwiseallowed to use the environment, or in the alternative, by everyone whodesires to use the custom environment. Thus, for example, a user maytake her favorite environment and replace several stores and meetinghalls that she does not use with other stores and meeting halls that shefrequents, and thereby create an essentially fully customizedenvironment with all of her favorite environments and areas, all withineasy navigation of her primary environmental destination.

Customization or environments may be configured to permit other users tobe within the same original environment, and thus be visible and capableof interacting with the user(s) of the custom environment, even thoughfor those other users, the various environments and areas may bedifferent. For example, unrelated users may see each other on the street302 that is outside of the various doors/portals, but if the two userswalk through a door or portal that is not set to the same destination,the users will then arrive in different destinations and no longer be inthe same environment or area. Referring to FIGS. 3A and 3B, a first usermay be present on road 302 and walk into building 312 to arrive in adifferent destination than a second user who walks with through the samedoor into a different building 326.

The system may also enable users to create areas or environments thatwill serve as personal transportation centers. Under this feature, auser could create a personal environment that is totally customized,with no pre-existing base environment. The environment that the usercreates can be assembled using any available techniques, but such thatat least one portal is placed within the environment. The destination ofthat at least one portal may be established by the user. The geometry ofthe environment may also be established by the user so that the user hasthe ability to customize that transportation area so that it optimallysuits their desire. A transportation center may be provided as a privateenvironment linked to one or more common environments via a portal. Atleast one portal in the transportation center may be locked so that italways leads to a defined common environment. Other portals may belocated closely adjacent to one another to provide convenient access todesired common and private destination environments.

The system may further be configured to permit the user to customize thedestination of portals such that one portal may serve more than onedestination depending on user defined parameters including but notlimited to: time of day, day of week, time of year, preset sequentialdestinations, user commands upon entry to the portal, user commandsprior to entry, how the user signed in to the VRU, random destination,results of a search, prior actions of the user, or the prior location orlocations of the user in the VRU. Thus, a single portal may allow theuser the ability to transport to more than one destination area orenvironment based on parameters and preferences as established by theuser and/or the operator of the VRU.

An advantage of the instant technology is that it provides users with away to organize their portals and thus simplify their ability tonavigate in a VRU. This is highly advantageous over existingtransportation methods used by existing VRU's. Thus, a user may, forexample, have a portal for all their work related destinations and adifferent portal for all of their shopping destinations. As the user isentering the portal, if they wish to go to a work destination, the usercould use a method as is well known in the art, such as selecting from adrop-down menu, to find an appropriate destination when entering thefirst portal, or from a similar organized drop-down menu to find a shopfor her shopping needs, from her second portal. The advantages compoundas users create additional custom portals with greater granularity ofdefined destinations.

In some embodiments, a user's customized portals in her maintransportation center lead to other customized environments whichcontain customized portals that are of greater specificity, whichportals may lead to an unlimited number of additional environments withportals of greater and greater specificity until the user uses a finalportal to arrive at a new environment. For example, a user may passthrough a “shopping” portal to arrive at an environment that includesher favorite shopping destinations. She may then pass through a“clothing” portal, then through a portal leading to a specific dressshop to find an item she is looking for.

In yet another embodiment of the technology, portals in the customizedtransportation center and any more specific custom transportationcenters that the user uses, may contain facades of the destination, anactual view of the outside and/or interior of the destination (throughuse of virtual video cameras as is well known in the art, or throughother similar mechanisms) and other graphical or textual or otherinformation, which may provide the user with information such as but notlimited to whether the destination has been modified since they lastvisited, or whether other users are inside or are entering and exitingthe environment.

The space available to a destination need not be limited to its apparentsize. Referring to FIGS. 4A and 4B, a building 402 may have an apparentarea footprint “A” when viewed from the outside environment 400 by auser 404. After the user 404 enters the building 402′, it may beassigned second apparent area footprint “B” that is not equal to “A.”Ordinarily, “B” should be larger than “A,” although it can also besmaller. This feature is not limited to enclosed structures orenvironments. It may apply to any bounded area or volume of the VRU. Forexample, a parcel of virtual real estate may be increased in size aftera user enters it. This permits neighbors to dwell in close proximity,which is more convenient for visiting, while still permitting largeareas within each plot. This feature is also useful for relievingovercrowding that may occur as a VRU increases in popularity.

To enable this expanded space feature, the VRU system may maintainseparate maps of non-expanded and expanded spaces. Some portion or allof the boundary around the expanded space is configured to act as aportal (or as numerous separate portals) from the non-expanded spaceinto the expanded space. For example, as shown in FIG. 4A, a door in thewall of the building 402 acts as a portal to an expanded interior space.For non-enclosed spaces, a line or surface surrounding the expandedspace in the non-expanded space may be mapped to a line or surfacesurrounding the non-expanded space inside the expanded space via anon-unitary mathematical transform (i.e., not merely multiplication byone), or using a look-up table. For example, if an expanded area isprovided with a hundred-fold (10²) expansion of space, every meter ofboundary around the expanded space in the non-expanded space may belinearly mapped to a corresponding boundary around the expanded space inthe expanded space by a factor of ten. Thus, an avatar entering theexpanded space from the 4.5 meter boundary position in the non-expandedspace may be placed at the 45 meter boundary position in the expandedspace. If the avatar later returned to the non-expanded space at the 87meter boundary position in the boundary of the expanded space, theavatar may be placed at the 8.7 meter boundary position in thenon-expanded space.

After a user passes through a portal, the VRU system uses the map of theexpanded space to generate the user environment, with the user placed inthe expanded space at an entry point defined for the passed portal.Likewise, some portion or all of the boundary of the expanded space isconfigured as a return portal or portals to the originating non-expandedspace. Optionally, a portion of the boundary may be configured as aportal to other spaces, or the expanded space, like the non-expandedspace, may simply contain portals to other places. After a user haspassed through a return portal, the VRU system uses the map of thenon-expanded space to generate the user environment, with the userplaced in the non-expanded space at a re-entry point defined for thepassed portal. In this way, seamless transitions may be made betweenexpanded and non-expanded areas. The effect of such transitions maytherefore be as if objects passing into the expanded space shrink insize, and shrunken objects passing back into the non-expanded space arerestored to their normal size.

FIGS. 5A-5C illustrate operation of a customized portal for differentusers. Initially, avatars 506, 508 belonging to different participantsare located in a common area 500, shown in plan view. Each avatar istherefore rendered to both participants; i.e., each participant can seeand control his own avatar, and can see and interact with the avatarcontrolled by the other participant. The two avatars 506, 508 are nextto a doorway 501 that has been customized for avatar 506 to lead to acustom environment 504. The default destination for the doorway isenvironment 502, in which another avatar 510 happens to be present.

FIGS. 5B and 5C show what happens after the avatars 506, 508 passthrough the doorway 510. As shown in FIG. 5B, avatar 508 is inenvironment 502 with avatar 510. Avatar 506, however, is absent as faras avatar 508 is concerned. As shown in FIG. 5C, avatar 506 is inenvironment 504 with another avatar 512 that happens to be presentthere. Avatar 508 is not in environment 504. Operation of doorway 501may be configured such that if both avatars 506, 508 (and either ofavatars 510, 512) pass back through the door, these avatars will bepresent together again in the common environment 500.

FIG. 6 shows exemplary steps of a method 600 for operating a VRU portal.The method may be performed by a VRU engine in a system such asdescribed above. The system includes customization data for variousportals in the VRU and instructions for operating in response to suchdata. At step 602, the VRU engine may receive or generate a signalindicating that a player has entered a portal, or is about to enter aportal. For example, the VRU engine may generate a signal indicatingthat an avatar moving in the VRU space in response to input from aclient device has triggered an entry transaction with a portal object ofthe VRU space. Generally, such a signal will be generated when someportion of an avatar's surface has broken a portal plane, the avatarcoordinates pass through a defined plane or space, the user causes theavatar to perform some action, such as pushing a virtual button ormoving to a defined place, or by any other suitable change in state ofthe avatar.

At step 604, the VRU engine receives an identifier for the avatar. Thismay be supplied, for example, by a data record maintained for the avatarat the server level, client level, or some combination of the foregoing.In the alternative, the user may be required to provide an identifierand/or password. The identifier should be unique to the avatarperforming the action. Note that a single participant may register morethan one avatar, and may desire to customize portals differently fordifferent avatars. Such capability may be facilitated by providingidentifiers for avatars, not merely for users. Generally, uniqueidentifiers may be assigned to any or every object in the VRU space.This includes, of course, the portal through which the avatar ispassing, which may have its own unique identifier.

At step 606, the VRU engine may determine whether a custom destinationhas been defined for the portal and avatar in question. For example, theVRU may maintain an index of custom destinations, organized by avatarand portal ID. If a record exists in the index, the custom destinationmay quickly be determined from it. If no record exists, then it isdetermined that no custom destination has been defined.

If no custom destination is defined, the avatar is caused to enter adefault destination for the portal, at step 608. Conversely, if a customdestination environment is defined for the avatar and portal, the avataris caused to enter the custom destination environment at step 612. Atthe VRU engine level, such entry to a default or custom destinationenvironment may be facilitated by identifying the respectiveenvironment, pulling the environmental data for the destinationenvironment, and ether rendering the scene and providing the scene tothe player interface at the client level, or sending the environmentaldata to the client for rendering at the client level. It should beappreciated that data for certain elements, such as core elements, maybe stored locally at the client level to reduce bandwidth demands. Theserver-located engine in such case may merely provide the client withdata concerning non-core elements and elements controlled by otherclients, which may then be added to the core elements at the clientlevel to render the scene.

At optional step 610, the VRU engine may determine whether thedestination is subject to other conditions, for example a code specifiedby the user, a time preference, a frequency-of-use preference, or othercondition. The other condition may be specified by the user operatingthe avatar when configuring the portal. In the alternative, the othercondition may be specified by another user, or a system administrator,according to examples provided hereinabove. If no other conditionsapply, the avatar is delivered to a first custom destination, at step612. Optionally, if another condition applies, then the avatar isdelivered to a second custom destination, at step 614.

FIG. 7 shows an exemplary common scene 700 containing multiple avatars,e.g., avatars 702, 704. Each avatar is controlled by a different playervia a remote interface. The common scene 700 appears to be the same foreach avatar. However, each player may select a different viewpoint ofthe scene, so the rendered view of the scene may be different fordifferent players. Scene 700 includes multiple storefronts, such asstorefront 706, that may serve as portals to common spaces,personalizable spaces, or some combination of the foregoing.

Having thus described a preferred embodiment of simulation method withuser-defined transportation and space, it should be apparent to thoseskilled in the art that certain advantages of the within system havebeen achieved. It should also be appreciated that various modifications,adaptations, and alternative embodiments thereof may be made within thescope and spirit of the present disclosure. For example, implementationof the method over a wide area network has been illustrated, but itshould be apparent that the inventive concepts described above would beequally applicable to other networks.

What is claimed is:
 1. A system comprising: a host computer operating amodeling engine for a multi-user shared modeled three-dimensionalenvironment including manipulation of avatars and modeled objects inresponse to input from a plurality of clients, the modeling engineoperative for: modeling an environment containing a subject area havinga first scale when viewed from outside the subject area; modeling theenvironment containing the subject area having a second scale whenviewed from inside of the first area; wherein the first and secondscales are not equal; and wherein the subject area occupies an amount ofspace in the area outside of the subject area that is not equal to theamount of space located within the subject area.
 2. The system of claim1, wherein the system maintains separate maps of the subject area havingthe first scale and of the subject area having the second scale.
 3. Thesystem of claim 1, wherein some portion of the boundary around thesubject area is configured to act as a portal from the subject areahaving one of the first or second scales to the subject area having theother of the first or second scale.
 4. The system of claim 3, whereinthe user passes from the subject area having the first scale to thesubject area having the second scale, and the system uses a map of thesubject area having the second scale to generate the user environment.5. The system of claim 3, wherein the user passes from the subject areahaving the second scale to the subject area having the first scale, andthe system uses a map of the subject area having the first scale togenerate the user environment.
 6. The system of claim 1, wherein a lineor surface surrounding the exterior of the subject area is mapped to aline or surface surrounding the interior of the subject area, and suchmapping is accomplished utilizing a non-unitary mathematical transform.7. The system of claim 1, wherein a line or surface surrounding theexterior of the subject area is mapped to a line or surface surroundingthe interior of the subject area, and such mapping is accomplishedutilizing a look-up table.
 8. The system of claim 1, wherein the firstscale is smaller than the second scale.